EP0200988A1 - Outil d'extraction d'un barreau - Google Patents

Outil d'extraction d'un barreau Download PDF

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Publication number
EP0200988A1
EP0200988A1 EP86105542A EP86105542A EP0200988A1 EP 0200988 A1 EP0200988 A1 EP 0200988A1 EP 86105542 A EP86105542 A EP 86105542A EP 86105542 A EP86105542 A EP 86105542A EP 0200988 A1 EP0200988 A1 EP 0200988A1
Authority
EP
European Patent Office
Prior art keywords
housing
rod
tool assembly
fuel rod
fuel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP86105542A
Other languages
German (de)
English (en)
Inventor
Donn Moore Matteson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Combustion Engineering Inc
Original Assignee
Combustion Engineering Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Combustion Engineering Inc filed Critical Combustion Engineering Inc
Publication of EP0200988A1 publication Critical patent/EP0200988A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21C—NUCLEAR REACTORS
    • G21C19/00—Arrangements for treating, for handling, or for facilitating the handling of, fuel or other materials which are used within the reactor, e.g. within its pressure vessel
    • G21C19/26—Arrangements for removing jammed or damaged fuel elements or control elements; Arrangements for moving broken parts thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B9/00—Hand-held gripping tools other than those covered by group B25B7/00
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E30/00—Energy generation of nuclear origin
    • Y02E30/30—Nuclear fission reactors

Definitions

  • the present invention relates to tools with which to service and repair nuclear reactor vessel components. More particularly, the invention relates to a tool which removes broken fuel rods from nuclear reactor fuel assemblies.
  • a genre of tools has been and is being developed for nuclear reactor systems.
  • the fuel rods which generate the heat for liquids passed through the reactor vessel break from various causes. Segments of broken fuel rods must be removed so they may be replaced, using other tools for the replacement. There is sufficient access to parts of broken fuel rods, which space is available to insert a tool down into the fuel assembly to reach the segments of broken fuel rods.
  • the required removal tool must have the configuration or organization of its parts to efficiently receive the upper end of the fuel rod segment and exert a lateral force on the segment which enables it to be pulled from its position and removed from the fuel assembly.
  • the present invention contemplates an elongated tubular housing open at one end.
  • the housing is arranged vertically to lower its open end toward a broken fuel rod.
  • a length of the broken rod is received into the interior of the housing and within an elastomer body mounted in the housing.
  • a cylindrical push rod is mounted within the housing and arranged to lower onto the upper end of the elastomer body in order to deform the elastomer to grip the broken fuel rod and thereby connect the fuel rod to the housing.
  • the housing and fuel rod are then withdrawn from the fuel assembly.
  • the invention further contemplates a removal rod coaxial within the housing and adapted to be moved downward against the end of the broken fuel rod to eject the rod from the housing.
  • the invention further contemplates that the open end of the housing is defined by a cap having a truncated cone flaring outwardly from the housing and ending in an aperture through which the fuel rod is guided into the housing.
  • End cap 3 is disclosed as controlling the entry of the fuel rod into housing 1 through aperture 2.
  • the cap when threaded into the lower end of housing 1, provides a surface 11 upon which the elastomer body rests.
  • the elastomer body is captured between surface 11 and the lower end of push rod 9 and is deformed for the purpose of gripping the side of the fuel rod.
  • elastomer body 5 is in the form of a rube or ring.
  • Cap 3 includes two protrusions 12 and 13 at right angles to the axis of the housing. These protrusions can engage slots in a suitable container, not shown, for disposing of radioactive fuel rods.
  • the protrusions on the cap are engaged by the slots in the container and the rod pulling tool assembly rotated to cause the cap and elastomer body to be removed from housing 1. This assures release of the fuel rod.
  • the truncated cone of the cap not only guides the fuel rod into the housing, but it also causes the inward movement of any flared or protruding segments of the fuel rod cladding so the rod can be passed through the elastomer body.
  • the inside diameters of cap 3, elastomer body 5, and push rod 9 are sufficiently large that the rough broken end of the fuel rod can enter the tool and be gripped.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Mechanical Engineering (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Gripping On Spindles (AREA)
  • Devices For Opening Bottles Or Cans (AREA)
EP86105542A 1985-05-06 1986-04-22 Outil d'extraction d'un barreau Withdrawn EP0200988A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US73087985A 1985-05-06 1985-05-06
US730879 1985-05-06

Publications (1)

Publication Number Publication Date
EP0200988A1 true EP0200988A1 (fr) 1986-11-12

Family

ID=24937156

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86105542A Withdrawn EP0200988A1 (fr) 1985-05-06 1986-04-22 Outil d'extraction d'un barreau

Country Status (3)

Country Link
EP (1) EP0200988A1 (fr)
JP (1) JPS61254891A (fr)
ES (1) ES8800494A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2221787A (en) * 1988-08-10 1990-02-14 Atomic Energy Authority Uk Nuclear fuel sub-assemblies
FR2641117A1 (fr) * 1988-12-28 1990-06-29 Framatome Sa
FR2704680A1 (fr) * 1993-04-27 1994-11-04 Framatome Sa Dispositif de retenue de la partie d'extrémité supérieure des adaptateurs de traversée du couvercle de la cuve d'un réacteur nucléaire refroidi par de l'eau sous pression.
WO2022079262A1 (fr) 2020-10-16 2022-04-21 Framatome Dispositif d'extraction d'un crayon de combustible nucléaire ou d'un crayon de grappe et procédé d'extraction utilisant un tel dispositif d'extraction

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107274945B (zh) * 2017-08-01 2023-04-25 中机中联工程有限公司 核燃料组件拉棒生产系统

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1225784A (fr) * 1959-02-18 1960-07-04 Commissariat Energie Atomique Outil de déchargement, notamment pour éléments de combustible de réacteurs nucléaires
US3537234A (en) * 1967-11-07 1970-11-03 Continental Can Co Container cap construction
US4049307A (en) * 1976-04-30 1977-09-20 Potts Walter C Extractor device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1225784A (fr) * 1959-02-18 1960-07-04 Commissariat Energie Atomique Outil de déchargement, notamment pour éléments de combustible de réacteurs nucléaires
US3537234A (en) * 1967-11-07 1970-11-03 Continental Can Co Container cap construction
US4049307A (en) * 1976-04-30 1977-09-20 Potts Walter C Extractor device

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2221787A (en) * 1988-08-10 1990-02-14 Atomic Energy Authority Uk Nuclear fuel sub-assemblies
FR2641117A1 (fr) * 1988-12-28 1990-06-29 Framatome Sa
US4986955A (en) * 1988-12-28 1991-01-22 Framatome Device for removing peripheral fuel rods from a fuel assembly of a nuclear reactor
BE1007332A3 (fr) * 1988-12-28 1995-05-23 Framatome Sa Dispositif et procede d'extraction de crayons peripheriques d'un assemblage combustible d'un reacteur nucleaire.
FR2704680A1 (fr) * 1993-04-27 1994-11-04 Framatome Sa Dispositif de retenue de la partie d'extrémité supérieure des adaptateurs de traversée du couvercle de la cuve d'un réacteur nucléaire refroidi par de l'eau sous pression.
WO2022079262A1 (fr) 2020-10-16 2022-04-21 Framatome Dispositif d'extraction d'un crayon de combustible nucléaire ou d'un crayon de grappe et procédé d'extraction utilisant un tel dispositif d'extraction
FR3115391A1 (fr) 2020-10-16 2022-04-22 Framatome Dispositif d’extraction d’un crayon de combustible nucléaire ou d’un crayon de grappe et procédé d’extraction utilisant un tel dispositif d’extraction

Also Published As

Publication number Publication date
JPS61254891A (ja) 1986-11-12
ES554678A0 (es) 1987-11-01
ES8800494A1 (es) 1987-11-01

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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AK Designated contracting states

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Designated state(s): BE CH DE FR LI SE

17P Request for examination filed

Effective date: 19861127

17Q First examination report despatched

Effective date: 19880527

STAA Information on the status of an ep patent application or granted ep patent

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18D Application deemed to be withdrawn

Effective date: 19890109

RIN1 Information on inventor provided before grant (corrected)

Inventor name: MATTESON, DONN MOORE